How to Grow ʻŌhiʻa Lehua ʻAi
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ʻŌhiʻa Lehua ʻAi
Metrosideros polymorpha var. polymorpha
treeʻŌhiʻa lehua ʻai is a Hawaiian native tree prized for its edible fruits and striking red flowers. It is a variety of the common ʻōhiʻa lehua, distinguished by its larger, sweeter fruit suitable for eating fresh. This culturally significant tree thrives in volcanic soils and is essential to Hawaiian ecosystems and traditional food systems.
When should you plant ʻŌhiʻa Lehua ʻAi in your zone?
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Example ʻŌhiʻa Lehua ʻAi timeline · Pittsburgh, PA (Zone 6b)
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Plant ʻŌhiʻa Lehua ʻAi
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest ʻŌhiʻa Lehua ʻAi
Late summer into fallBefore the first fall frost (≈ Nov 8)
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Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in USDA zones 10b-11b; best in Hawaii and warm tropical climates
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Seedling
6-12 months in nurserySmall seedlings with soft, light green leaves, typically grown in nursery containers before transplanting
Maintain consistent moisture; protect from direct harsh sun; provide shelter from strong winds; transplant when 6-12 inches tall
Establishment
1-2 yearsYoung tree developing root system and branching structure; still relatively small with new leaf growth
Water regularly and deeply; stake for wind protection; mulch around base; avoid heavy pruning; monitor for pests
Growth & Development
3-5 yearsTree increases in height and canopy width; leaves become more mature and glossy; branch structure solidifies
Continue regular watering; thin branches if needed for structure; fertilize with balanced or slightly higher potassium formula; maintain mulch
Flowering
Several weeks, typically spring-summer in HawaiiDistinctive clusters of bright red, fluffy flowers appear at branch tips; highly ornamental and attracts native birds
Ensure adequate sunlight for best blooming; fertilize with phosphorus-rich formula to encourage flowers; maintain consistent watering; do not over-prune
Fruiting & Harvest
Fruit develops over several months; harvest when ripeFlowers transition to round, hard-shelled fruits with sweet, gelatinous pulp inside; fruits ripen and become softer
Maintain consistent water supply for fruit development; protect from excessive rain during ripening; thin fruit if overly crowded; monitor for fruit flies
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Inspect regularly; remove affected leaves; use neem oil spray if severe; encourage natural predators
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Spray with strong water stream; use insecticidal soap; apply neem oil; introduce ladybugs
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Harvest ripe fruit promptly; remove fallen fruit; use fruit fly traps; maintain sanitation around tree
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Prune heavily infested branches; apply horticultural oil; monitor with sticky traps; introduce parasitic wasps
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Remove infected leaves immediately; improve air circulation; avoid overhead watering; plant in well-draining location; may require fungicide in severe cases
Uses
Fresh fruit eating and beverages
CulinaryThe sweet, gelatinous pulp inside the hard shell is eaten fresh or used to make juices and traditional Hawaiian beverages. The flavor is sweet with subtle floral notes, prized in Hawaiian cuisine. [source]
Traditional Hawaiian medicine
MedicinalʻŌhiʻa lehua has been used in traditional Hawaiian healing practices (lāʻau lapaʻau) for various ailments, including respiratory support and immune function. The flowers and bark contain bioactive compounds. [source]
Ornamental and cultural significance
HouseholdThe striking red flowers make it a beautiful ornamental tree for Hawaiian gardens and landscapes. Highly significant in Hawaiian culture and native plant restoration efforts. [source]
Native bird habitat and nectar
WildlifeThe flowers attract ʻiʻiwi and other endemic Hawaiian honeycreepers, supporting critical native bird populations. Essential for ecosystem restoration in Hawaii. [source]
Traditional lei and cultural practices
CraftThe red flowers are traditionally used in lei-making and Hawaiian ceremonies. Culturally important in maintaining Hawaiian traditions and connection to ʻāina (land). [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Harvest fruits when fully ripe and slightly soft to the touch, typically 5-7 months after flowering. The hard shell will be dry-looking and brown. Cut or gently pull fruit from the tree. Fruits are ready to eat fresh when slightly yielding; extract pulp by cracking open the hard outer shell. Best harvested in morning after dew dries. Store ripe fruit in cool location; consume within a few days for best flavor.
Fun Facts
- 🌱 ʻŌhiʻa lehua is endemic to Hawaii and is the most widely distributed native Hawaiian tree, found across all major islands from sea level to over 9,000 feet elevation.
- 🌱 The name ʻōhiʻa lehua has legendary origins in Hawaiian mythology, associated with the volcano goddess Pele and stories of transformation.
- 🌱 ʻŌhiʻa lehua is critical to Hawaii's native forest ecosystem and is a keystone species; many endemic Hawaiian birds depend on it for food and habitat.
Gardening Terms
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